Bahamas, Canada, Guatemala, Mexico, Turks and Caicos Islands, USA (B).
Breeds in southern Canada from northern British Columbia eastern across Alberta and Saskatchewan to southern Ontario, throughout western USA south to California and New Mexico and east to northern Nebraska and Michigan, and in north-western Mexico (including northern Baja California). northern breeders migrate to south-western parts of breeding range and south to southern USA and southern Mexico.
 
Population
Estimated population is 35,000,000 (2010).
Brewer's Blackbird (Euphagus cyanocephalus) [XC159733]
by Scott Crabtree from Swan Lake, Victoria, Vancouver Island, BC, Canada (call)
Brewer's Blackbird (Euphagus cyanocephalus) [XC186652]
by Richard E. Webster from Old Post No. 43 (near Fir Mountain), Division No. 3, Saskatchewan, Canada (call)